erbium

Erbium

By Max Parry

Atomic number- 68
Atomic symbol- er
Atomic mass- 167.26
Melting point- 1529 C
Boiling point- 2868 C
Density- 9.07 grams per cubic centimeter
Name- for the village of Ytterby, Sweden.
Estimated Crustal Abundance- 3.5 milligrams per kilogram
Discovered- in a quarry near the town of Ytterby, Sweden
when was it discovered- In 1843, Carl Gustaf Mosander, a Swedish chemist